| Project/Area Number |
25000009
|
|---|
| Research Category |
Grant-in-Aid for Specially Promoted Research
|
| Allocation Type | Single-year Grants |
|---|
| Review Section |
Science and Engineering
Engineering
|
|---|
| Research Institution | Tohoku University |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
ASANUMA Hiroshi 国立研究開発法人産業技術総合研究所, 再生可能エネルギー研究センター, 地熱チーム長 (50250717)
OKMOTO Atsushi 東北大学, 大学院環境科学研究科, 准教授 (40422092)
SAKAGUCHI Kiyotoshi 東北大学, 大学院環境科学研究科, 准教授 (50261590)
WATANABE Noriaki 東北大学, 大学院環境科学研究科, 准教授 (60466539)
HIRANO Nobuo 東北大学, 大学院環境科学研究科, 助教 (80344688)
KIZAKI Akihisa 秋田大学, 国際資源学研究科, 准教授 (60344686)
MORIYA Hirokazu 東北大学, 大学院工学研究科, 教授 (60261591)
|
|---|
| Project Period (FY) |
2013 – 2017
|
| Project Status |
Completed (Fiscal Year 2017)
|
| Budget Amount *help |
¥546,260,000 (Direct Cost: ¥420,200,000、Indirect Cost: ¥126,060,000)
Fiscal Year 2017: ¥74,100,000 (Direct Cost: ¥57,000,000、Indirect Cost: ¥17,100,000)
Fiscal Year 2016: ¥95,550,000 (Direct Cost: ¥73,500,000、Indirect Cost: ¥22,050,000)
Fiscal Year 2015: ¥80,990,000 (Direct Cost: ¥62,300,000、Indirect Cost: ¥18,690,000)
Fiscal Year 2014: ¥110,500,000 (Direct Cost: ¥85,000,000、Indirect Cost: ¥25,500,000)
Fiscal Year 2013: ¥185,120,000 (Direct Cost: ¥142,400,000、Indirect Cost: ¥42,720,000)
|
|---|
| Keywords | 地殻エネルギー / 再生可能エネルギー / 超臨界流体 / 脆性破壊 / 脆性延性遷移領域 / 地熱貯留層 / 岩石-水相互作用 / 貯留層シミュレーター / 地熱エネルギー |
|---|
| Outline of Final Research Achievements |
Geological models and the properties of supercritical geothermal reservoirs are described with respect to supercritical geofluids, mechanical behaviors of reservoir rocks, crustal permeability and tectonic settings. Mechanical conditions at the elastic-plastic boundaries of granitic rocks indicate potentially exploitable supercritical geothermal resources. Tensile fracturing is possible even in ductile rocks, and some permeability-depth relations proposed for the continental crust show no drastic permeability reduction at the BDT (Brittle-Ductile Transition). The reservoir permeability (>10^[-16] m^2) could be maintained even under supercritical conditions. The permeable-impermeable boundary of the crust and geothermal reservoirs were affected by water-rock interaction such as dissolution and precipitation of silica minerals. NE Japan is representative of an Island-Arc setting in a subduction system, and it is highly possible that exploitable supercritical geothermal resources may be located on and around the present volcanic front.
|
| Assessment Rating |
Verification Result (Rating)
A
|
Assessment Rating |
Result (Rating)
A: Progress in the research is steadily towards the initial goal. Expected research results are expected.
|
